Modulators bao gồm các sản phẩm có mã như sau 308-N3151X-FMXX, 308-N3182X-FMXX, 308-N3282X-AMXX..
Đặc điểm chung
- Superior vestigial sideband filtering for adjacent channel systems
- Low spurious harmonic output
- Highly accurate crystal controlled oscillator
- 5 digits LED on Front panel
- Front panel keys for adjusting frequency, modulation level, A/V ratio, volume, RF signal level
- -25 dB test point on Rear panel
- GaAs Component used for 308-N3282X-AMXX
- System: PAL-B/G/D, NTSC
Thông tin sản phẩm
| Part # |
Mô tả sản phẩm |
| 308-N3151X-FMXX |
Fixed channel Modulator |
| 308-N3182X-FMXX |
Fixed channel Modulator |
| 308-N3282X-AMXX |
Agile Channel Modulator |
Superior vestigial sideband filtering for adjacent channel systems Low spurious harmonic output Highly accurate crystal controlled oscillator 5 digits LED on Front panel Front panel keys for adjusting frequency, modulation level, A/V ratio, volume, RF signal level -25 dB test point on Rear panel GaAs Component used for 308-N3282X-AMXX System: PAL-B/G/D, NTSC.
Thông số kỹ thuật
| |
Part # |
308-N315X-FMXX |
308-N3182X-FMXX |
308-N3282X-AMXX |
| RF Output |
Frequency range (MHz) |
47-550 |
47-860 |
45-860 |
| Frequency stability (KHz) |
±10 |
±10 |
±5 |
| Tuning step (KHz) |
/ |
/ |
250 |
| Output level (dB μV) |
100 |
105 |
108 |
| Output level adjustable (dB) |
0 to -20 |
0 to -20 |
0 to -20 |
| Output return loss (dB) |
14 |
14 |
13 |
| Spurious output (dB) |
-62 |
-62 |
-60 |
| C/N Ratio in Channel (dB) |
65 |
65 |
65 |
| Audio/ video carrier ratio adjustable |
-10 to -20 dB |
/ |
| Output impedance (Ω) |
75 |
75 |
75 |
| Video Section |
Standard input level (V p-p) |
0.5 |
0.5 |
1.0 |
| Input impedance (Ω) |
75 |
75 |
75 |
| Video S/N ratio (dB) |
53 |
60 |
50 |
| Video Response (dB) |
1.0 |
1.5 |
1.5 |
| Differential Gain |
<3% |
<3% |
2.5% |
| Differential Phase |
<3° |
<3° |
2.5° |
| C/L delay Inequality |
40nS |
40nS |
40nS |
| Video modulation level adjustable |
/ |
/ |
1-32 |
| Audio Section |
Input level range (dBmV) |
+5 ~ +25 |
+5 ~ +25 |
+5 ~ +25 |
| Input impedance (Ω) |
>10k |
>10k |
>10k |
| Frequency response (dB) |
1.5 |
1.5 |
1.5 |
| Audio S/N (dB) |
55 |
55 |
52 |
| Audio distortion |
1.0% |
1.0% |
0.4% |
| Audio Frequency |
6.50, 6.00, 5.50, 4.50 MHz Optional |
| Pre-emphasis |
50μs |
50μs |
50μs |
| Audio Level Adjustable |
/ |
/ |
1-32
|
